ARM: disable KCOV for trusted foundations code
authorArnd Bergmann <arnd@arndb.de>
Wed, 4 Jul 2018 00:02:49 +0000 (17:02 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 4 Jul 2018 00:32:19 +0000 (17:32 -0700)
commit5e4e290d3751607726a62f0b49e11261a0a9345e
tree593f481c81fef22506d9bc94586357f3bfd0e02d
parent1e8e18f694a52d703665012ca486826f64bac29d
ARM: disable KCOV for trusted foundations code

The ARM trusted foundations code is currently broken in linux-next when
CONFIG_KCOV_INSTRUMENT_ALL is set:

  /tmp/ccHdQsCI.s: Assembler messages:
  /tmp/ccHdQsCI.s:37: Error: .err encountered
  /tmp/ccHdQsCI.s:38: Error: .err encountered
  /tmp/ccHdQsCI.s:39: Error: .err encountered
  scripts/Makefile.build:311: recipe for target 'arch/arm/firmware/trusted_foundations.o' failed

I could not find a function attribute that lets me disable
-fsanitize-coverage=trace-pc for just one function, so this turns it off
for the entire file instead.

Link: http://lkml.kernel.org/r/20180529103636.1535457-1-arnd@arndb.de
Fixes: 758517202bd2e4 ("arm: port KCOV to arm")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Olof Johansson <olof@lixom.net>
Tested-by: Olof Johansson <olof@lixom.net>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/arm/firmware/Makefile